एपीए उद्धरण

Ekelund, R. B. (1990). A history of economic theory and method. New York: McGraw-Hill.

शिकागो स्टाइल उद्धरण

Ekelund, Robert B. A History of Economic Theory and Method. New York: McGraw-Hill, 1990.

एमएलए उद्धरण

Ekelund, Robert B. A History of Economic Theory and Method. New York: McGraw-Hill, 1990.